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12

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0
Q: 

MailMessage & MAIL/EXPN/VRFY/ETRN

I was told that my program was not issuing a MAIL/EXPN/VRFY/ETRN when sending an email by the web hosting company we are connecting to.

Anyone know what this means and how I do it?

I am sending an email with SmtpClient and I have no problems with other clients.

Any suggestions?

Thanks!

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